import Vue from 'vue'
import VueRouter from 'vue-router'
import store from "@/store";

Vue.use(VueRouter)

const routes = [

  {
    path:'/login',
    name:'Login',
    component: () => import( '../views/Login.vue')
  },
  {
    path:'/register',
    name:'Register',
    component: () => import( '../views/Register.vue')
  },
  {
    path: '/404',
    name: '404',
    component: () => import( '../views/404.vue')
  },
]

const router = new VueRouter({
  mode: 'history',
  base: process.env.BASE_URL,
  routes
})

//提供一个重置路由的方法
export const resetRouter = () =>{
  router.matcher = new VueRouter({
    mode: 'history',
    base: process.env.BASE_URL,
    routes
  })
}

//刷新页面会导致页面路由重置
export const setRoutes = () =>{
  const storeMenus = localStorage.getItem("menus")
  if(storeMenus){
    //获取当前的路由对象名称数组
    const currentRouteNames = router.getRoutes().map(v => v.name)
    if(!currentRouteNames.includes('Manage')){
      //拼装动态路由
      const manageRoute = { path: '/', name: 'Manage', component: () => import( '../views/Manage.vue'), redirect:"/home", children:[
          { path: 'person', name: '个人信息', component: () => import('../views/Person.vue')},
          //{ path: 'password', name: '修改密码', component: () => import('../views/Password.vue')}
        ]}
      const menus = JSON.parse(storeMenus)
      menus.forEach(item => {
        if(item.path){
          let itemMenu = { path: item.path.replace("/",""), name: item.name, component: () => import( '../views/' + item.pagePath + '.vue')}
          manageRoute.children.push(itemMenu)
        }else if(item.children.length){
          item.children.forEach(item => {
            if(item.path){
              let itemMenu = { path: item.path.replace("/",""), name: item.name, component: () => import( '../views/' + item.pagePath + '.vue')}
              manageRoute.children.push(itemMenu)
            }
          })
        }
      })
      //动态添加到现在的路由对象去
      router.addRoute(manageRoute)
    }
  }
}
setRoutes()

//路由守卫
router.beforeEach((to, from, next) => {
  localStorage.setItem("currentPathName", to.name) //设置当前的路由名称，为了在Header组件中去使用
  store.commit("setPath") //触发store的数据更新

  if(!to.matched.length){
    const storeMenus = localStorage.getItem("menus")
    if(storeMenus){
      next("/404") //放行路由
    }else{
      //跳回登录页面
      next("/login")
    }
  }
  //其他情况放行
  next()

})
export default router
